Irrigation gate-post



Patented Oct. 18, 1921.

2 SHEETS-SHEET l.

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A. KEMPKEY. IRRIGATION GATE POST. APPLICATION FILED FEB. 23. 1921.

2 SHEETS-SHEET 2- Pa'tented Oct. 18, 1921.

Irromvex.

PATENT OFFICE.

AUGUSTUS KEMPKEY, OF BRENTWOOD, CALIFORNIA.

IRRIGATION GATE-POST.

To all whom it may concern:

Be it known that I, AUGUST-Us KEMPKEY, a citizen of the United States of America, residing at Brentwood, in the county of Contra Costa and State of California, have invented certain new and useful Improvements in Irrigation GratefPosts, of which the following is a specification.

The present invention is an improved irrigation gate post. i

The primary object. of the invention is to provide a reinforced concrete post a portion of which will become integral with a wing wall when the concrete is set and which will provide, on the end of the wall or side of the post adjacent the center of a ditch, a groove for a gate or fiashboards used to control the flow or head within the ditch.

Another object is to provide a separable metal form for said post which will obviate the necessity of a considerable amount of false -'work or fabricated forms entailing labor in installation and dismembering.

In the use of the structure hereinafter described headgates and diversion gates for irrigation ditches, laterals and sub-laterals may be constructed of standardized parts, the use of which will make waterways without reentrant angles and thus reduce the dangerof damage to the ditch from erosion. In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms and it is also to be understood that in and by claims following the description it is desired to cover the invention in whatever form it may be embodied.

In the accompanying two sheets of drawings, Figure 1 is a horizontal cross section of my gate post taken on the line II of Fig. 5.

Fig. 2 is a cross section of a modified form used on a wing wall for a three wayditch as shown in Fig. 1.

Fig. 8 is a modified post form also for use in a three way ditch.

Fig. 4 is a plan view of a cross line or four way ditch with three gates therein, showing my gate posts.

VFig. 5 is a section of Fig. 4 on the line Fig. 6 is a plan of a three Way ditch pro vided with my gate posts.

7 Specification of Letters Patent.

Patented Oct. 18, 1921.

Application filed February 23, 1921. Serial No. 447,228.

Fig. 7 is a section of Fig. 6 on the line VIL-VII.

Referring to the drawings the numerals 1, 2, 3 and 4 indicate side members of a metal form for my post.

Each side member is provided with a return bend 6 on one dge and a double return bend 7 on the opposite edge which said edges engage asshown'in Fig. 1 to form an interlocking metallic form to receive plastic material 8 such as concrete mixture. The weight of the mixture when poured into the mold thus formed exerts outward pressure 1n all dlrections and holds the interlocking corners securely in place. The return bends just described also give strength and rigidity to the form both before and after the mixture is set.

Each of the side members 1, 2, 3 and 4 is provlded with a channel 9 which further strengthens the form because of the angular structure and which serves as a metal lined groove after the form is completely set for sliding therein'a gate 11.

It is my object to provide metal formsof as few parts as possible of which the various gateways and posts required in irrigation systems may be constructed. By referring to Fig. 6, it will be seen that the gate posts A and B are in different angular relations to the wing walls 12 to which they are integrally formed.

The part B may be made with my form shown in Fig. 3, the anchorage of the mold which holds the post to the wall being pro vided by angle bends 13. This would serve to form a gate channel 9 for a wall in which the post would not extend above said wall.

Fig. 2 illustrates a similar means for providing a wall with obliquely faced gate channels, the anchorage being represented at 13*.

As it is desirable to extend the post above the wall to suspend the gate above the ditch when the water is at full flood, the form shown in Fig. 1 is oftener used as shown in Figs. 4 and 5. When this form is used as shown in said figures and the channels 9 are faced obliquely outward from the end of walls 12, anchorage is made, between the wall and that portion of the post which is integral therewith, by the spear shaped portion 14 embedded in the wall.

The wall 12 is indicated in dotted lines in Fig. 1.

My g i ssemb ed and operated shown in Figs. 4 and 5. The wingwalls 12 are poured in suitable forms closed at the gate end by the form described in Fig; 1 and if desired suitable reinforcing bars 16 used to connect same, in which case apertures would be made in the metal parts 1 of the form adjacent to the wall 12. Concrete is poured in the wall form and alsoin the post form.

Bolts 17 are partially embedded in concrete at the top of the posts and the threaded portions extend upwardly therefrom. Bridge members 18 extend from post to post and are held in place by the bolts 17 and nuts 19 thereon. Bridge members 18 are provided intermediate their length with apertures through which extend upwardly bolts 21 secured as shown at 22'to gates 11.

An internally-threaded hand wheel 23 serves,'when rotated, to raise and lower. the gate, to determine the flow of water therethrough.

The wing walls 12 are preferably disposed at an angle which divides that formed by the intersecting ditches (here shown at degrees in Fig. 1), and are rectangular in elevation, a portion indicated in dotted lines at 2 1, being embedded in the earth. This structure minimizes the tendency of the water to undercut the wall.

The gate posts might be formed without the metal reinforcing shell but the shell prevents spawling of thefinished post and effects a saving in construction.

1. An irrigation gate post comprising an upstanding post a portion of which is integral with a wing wall and a portion of which extends upwardly, therefrom and which is faces faclng away from said walls.

provided with channels on the sur- 2. A reinforced irrigation post comprising composite metal form the parts of which are adapted to interlock, embedded 1 throughout a portion of its length in a wing wall and provided with channels surfaced by said metal parts for receiving a gate.

3. A reinforced concrete irrigation gateway comprising a pair of opposed posts, the said posts being provided on their opposing surfaces with metal channels and provided with anchorage means on their surfaces remote from the gate for engaging a wing wall. 1. An irrigation gateway for intersecting waterways comprising wing walls disposed at angles equally dividing the angles of intersection of said ditches, posts integral with said walls and extending upwardly therefrom and gate receiving channels formed on said posts.

5. An irrigation gateway for intersecting waterways comprising wing walls disposed at angles equally dividing the angles of intersection of said ditches, posts integral with said walls and extending upwardly therefrom and gate receiving channels formed on said posts, a metal shell incasing said post and forming a lining for said channels.

6. An irrigation gateway for' intersecting waterways comprisin wing walls disposed at angles equally dlviding the angles of intersection of said ditches, posts integral with said walls and extending upwardly therefrom and gate receiving channels formed onsaid posts, a composite metal curing the said post to said wall.

a In testimony" whereof I affix my signature.

AUGUSTUS IKEMVPKEY.

shell incasing said-posts, portions of which 7 

